If you receive SYSTEM_SERVICE_EXCEPTION Blue Screen with Cldflt.sys being indicated as the file that failed, on your Windows computer, then this post offers solutions to help you fix the issue.
What is Cldflt.sys?
Cloud File Mini Filter Driver (Cldflt.sys) is a Windows system file that plays a crucial role in managing cloud storage services for Windows. It helps synchronize and manage data files between the local computer and the cloud, ensuring up-to-date file storage.
What causes Cldflt.sys BSOD error?
Issue with OneDrive: Since the Cldflt.sys file or errors associated with cloud storage and its synchronization, issues with Microsoft OneDrive can contribute majorly to the error. If the cloud server and the local machine communication are interrupted, the cldflt.sys file fails to function normally as it ideally should. Failure of the system file function can lead to a crash. It generates a system exception or stop code that leads to the crash.
Malfunctioning System Files: Possible corruption or malfunctioning of the Windows system files can significantly interrupt the functioning of the Cloud Filter Drivers. Filter Drivers are add-on files that help enhance the functionality of an OS service or component. Hence, even if the specific file in discussion is not corrupted, problems in other associated cloud storage driver files also affect the overall functioning.
How to fix Cldflt.sys Blue Screen error?
To fix SYSTEM_SERVICE_EXCEPTION Cldflt.sys Blue Screen on your Windows computer, follow these solutions:
- Reset or Reinstall OneDrive
- Run System File Checker and DISM Tool
- Make changes in Windows Registry
Before you begin, make sure that your Windows OS and OneDrive are updated to their latest version.
1] Reset or Reinstall OneDrive
You can reset OneDrive and check if the error stops reappearing.
If this doesn’t work, uninstalling and reinstalling OneDrive can also be performed by following the below-mentioned steps:
- Open the Run dialogue box and enter ms-settings:appsfeatures to open the Apps and Features option in Windows
- Search for Microsoft OneDrive in the list of installed Windows features.
- Click on the three dots beside Microsoft OneDrive, click Uninstall, and follow the on-screen instructions to remove the application.
- Once uninstalled, download the OneDrive setup file to install the same.
2] Run System File Checker and DISM Tool
Since corruption or inconsistent functioning of the system files can contribute majorly to the issue, executing system file checks can effectively resolve system crashes. The SFC utility in Windows can help in repairing damaged system files.
Apart from the System File Checker, the DISM utility can help repair Windows system files or components. The Deployment Image Service and Management Tool (DISM) for repairing system files and Windows components, where SFC may not resolve the issue.
3] Changes in Windows Registry
Editing the Windows Registry to ensure that the protocols of the Cloud Filter Driver are strictly followed. At the same time, data or file transfers occur between the computer and the cloud, which can also help fix the issue. To make the required change,
- Open the Windows Registry by typing regedit in the Run dialogue box.
- Navigate to
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\CldFlt\Instances
- Right-click on DefaultInstance key and click on Modify.
- Enter CldFlt in the Value Data Field and click on OK.
- Restart the system for the changes to take effect.
You can also execute the following Windows Terminal (Admin) command to update the registry:
reg add HKLM\System\CurrentControlSet\Services\Cldflt\instances /f /v DefaultInstance /t REG_SZ /d "CldFlt"
If all the above solutions fail to resolve the error, restore the system to an earlier stable point when the error did not happen.
I hope the post was easy to follow and you resolved the Cldflt.sys BSOD Error.
How do I repair BSOD booting?
First, restart your computer and press a unique key (usually F8) many times to access repair options. Then, choose Troubleshoot, then Advanced Options, and after that, select Startup Repair. It should help resolve basic issues with the boot.
Does reinstalling Windows fix BSOD?
Reinstalling Windows can often fix Blue Screen of Death (BSOD) errors caused by corrupt system files or software issues. It gives you a fresh start, removing any problematic files or configurations that might be causing the BSOD. This is the last measure if your BSOD is not resolved using any suggestion.
